package com.lagou.edu.service.impl;

import com.lagou.edu.annotation.Autowired;
import com.lagou.edu.annotation.Service;
import com.lagou.edu.annotation.Transactional;
import com.lagou.edu.dao.AccountDao;
import com.lagou.edu.pojo.Account;
import com.lagou.edu.service.TransferService;


/**
 * @author 应癫
 */
@Service("transferService")
@Transactional
public class TransferServiceImpl implements TransferService {


    //仅仅声明dao层的接口
    @Autowired
    private AccountDao accountDao;


    //提供Set方法供外部注入dao层实现类对象
    public void setAccountDao(AccountDao accountDao) {
        this.accountDao = accountDao;
    }


    @Override
    public void transfer(String fromCardNo, String toCardNo, int money) throws Exception {

            Account from = accountDao.queryAccountByCardNo(fromCardNo);
            Account to = accountDao.queryAccountByCardNo(toCardNo);

            from.setMoney(from.getMoney()-money);
            to.setMoney(to.getMoney()+money);

            accountDao.updateAccountByCardNo(to);
//            int c = 1/0;
            accountDao.updateAccountByCardNo(from);
    }

    @Override
    public String toString() {
        return "TransferServiceImpl{" +
                "accountDao=" + accountDao +
                '}';
    }
}
